Maybe she thought BA stood for "Baby Airlines" or "Benefit Airlines"!
How long is maternity leave anyhow? In normal desk jobs you would go off around 8 months into pregnancy, yes? But how is she going to "squeeze" into the cockpit in such a condition? Or does "Baby Airways" have special concessions for these situations?
It really is a matter of choice. What does she really want? To be a pilot or to be a mother? It really is that simple.
One thing that really puzzles me: How does she only have 1100 hours flight time after 4 years?
Cheers!